1: Fit the tyre WITH a tube – leave it overnight, pumped up
2: Deflate the tyre – carefully take out the tub so one side of the tyre remains seated.
3: Lather the tyre sidewalls with washing up liquid and water mix
4: Remove valve inner core (so you can get more air in quicker, assuming you have the tool to remove the core)
5: Fit track pump and pump like mad – the unseated bead will ping into place
6: Hang tyre from something and remove track pump. Make sure the beads remain seated.
7: Pour in sealant via valve hole. Screw in removable valve core.
8: Slosh sealaant round the tyre a bit.
9: Pump up tyre with track pump.
10: Spin tyre.
The above works for me with non tubeless tyres on Stan’s rims with yellow tape – Maxxis, Schwalbe, Specialized and Bontrager.